Removing micro scratches from collimator lens

[drummerdimitri]

Hello,

I was wondering if it is possible to remove light scratches from a glass collimator lens. I was trying to clean one of mine and I started getting a flare light artifact around the laser dot. I've tried alchohol, acetone with q tips and microfiber cloths as well as polishing with dremel compound and a felt wheel with no luck. I might have scratched the ar coating the first time, so I thought i would remove it by polishing it with my dremel tool and i seem to have succeeded because I see no purple tint on the lens anymore but the small scratches are there. Is there any way I could polish them off or do i need a new lens?

Thanks!

 

[Blord]

Watch this video. You are never going to get that scratch out of the lens with our limited tools.

 

[drummerdimitri]

Fine. In that case, where can I get a replacement lens for my LG Rigel HV? Other than LG of course...

 

[jeffreythe00]

Other than LG? Looks like you will need to find another Rival HV :/.

 

[drummerdimitri]

Other than LG? Looks like you will need to find another Rival HV :/.

You must be joking right? I asked them to send me a new one so lets see what will happen.

 

[jeffreythe00]

The lenses used in this laser are probably coated to pass the specific wavelength that your laser is outputting. Not to mention we don't know the dimensions and specs of the current lens. The only one who could tell you that would be the manufacturer and that would be whoever is supplying LG's lasers. LG might know the specs but I doubt they have any spares handy. So those would have to be special ordered. Not to mention that you could possibly contaminate the new lens and make your problem worse.

Which is why I suggest going through LG for this. Let us know what happens. I doubt a fix will be cheap :/

 

[drummerdimitri]

The lenses used in this laser are probably coated to pass the specific wavelength that your laser is outputting. Not to mention we don't know the dimensions and specs of the current lens. The only one who could tell you that would be the manufacturer and that would be whoever is supplying LG's lasers. LG might know the specs but I doubt they have any spares handy. So those would have to be special ordered. Not to mention that you could possibly contaminate the new lens and make your problem worse.

Which is why I suggest going through LG for this. Let us know what happens. I doubt a fix will be cheap :/

Any lens will work. I have tried this, but none of the ones match the original divergence of the lens. I can take some measurements with a digital caliper if that helps.